MODENDP-160 __NetBSD__ is a better define to use than NETBSD

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@10757 d0543943-73ff-0310-b7d9-9358b9ac24b2

src/mod/endpoints/mod_iax/iax-client.h

@@ -23,7 +23,7 @@
 #pragma warning(disable:4200)
 #endif
 
-#if !defined(LINUX) && !defined(NETBSD)
+#if !defined(LINUX) && !defined(__NetBSD__)
 #define socklen_t int
 #endif